Z51 package
Thread Starter
Pro
Joined: Mar 2012
Posts: 639
Likes: 28
From: South Eastern MI Michigan
Z51 package
I have a 2009 C6 Z51.
I have heard it has...
Stiffer suspension?
Thicker stabilizer bars?
Bigger brakes? (I can see that)
Does it have an oil cooler?
Now I think I heard that the transmission is actually beafed up too.
Anyone actually know what the Z51 option contains???
I have heard it has...
Stiffer suspension?
Thicker stabilizer bars?
Bigger brakes? (I can see that)
Does it have an oil cooler?
Now I think I heard that the transmission is actually beafed up too.
Anyone actually know what the Z51 option contains???
Burning Brakes
Joined: Aug 2011
Posts: 967
Likes: 1
i think they may have made slight changes over the years??????
but i haven't heard of a trans update
i've heard rear gear ratio (but i think was another option at least on our 05 is was, 2:73 vs 3:15??)
i know this type of info has been posted before, may want to try a search
greaseable tie rod ends too, i think that was Z51 specific
i know you CAN NOT and MUST not refer to the Z51 as a model
we have Z51 police on this board who will be all over your a$$ and will cite you for things like that, so becareful... they take is SUPER serious too
i don't think you can snip them off with a radar detector either
but i haven't heard of a trans update
i've heard rear gear ratio (but i think was another option at least on our 05 is was, 2:73 vs 3:15??)
i know this type of info has been posted before, may want to try a search
greaseable tie rod ends too, i think that was Z51 specific
i know you CAN NOT and MUST not refer to the Z51 as a model
we have Z51 police on this board who will be all over your a$$ and will cite you for things like that, so becareful... they take is SUPER serious too
i don't think you can snip them off with a radar detector either
Last edited by Don 79 TA; Apr 3, 2013 at 12:25 PM.
Melting Slicks
Joined: Jul 2008
Posts: 3,402
Likes: 5
From: Long Island NY
Race Director
Joined: Mar 2010
Posts: 16,884
Likes: 5,342
From: T-Town WA
2016 C6 of Year Finalist
My '05 (which is the only one I care about) has
higher spring rates and shocks,
larger sway bars,
larger cross-drilled rotors,
engine oil, transmission, and power steering fluid coolers,
Goodyear EMT tires,
revised gear ratios for 6spd or performance axle ratio (3.15) with automatic.
So...beefier trans??? Dunno, probably not.
higher spring rates and shocks,
larger sway bars,
larger cross-drilled rotors,
engine oil, transmission, and power steering fluid coolers,
Goodyear EMT tires,
revised gear ratios for 6spd or performance axle ratio (3.15) with automatic.
So...beefier trans??? Dunno, probably not.
Safety Car
Joined: May 2011
Posts: 3,582
Likes: 46
From: va
My '05 (which is the only one I care about) has
higher spring rates and shocks,
larger sway bars,
larger cross-drilled rotors,
engine oil, transmission, and power steering fluid coolers,
Goodyear EMT tires,
revised gear ratios for 6spd or performance axle ratio (3.15) with automatic.
So...beefier trans??? Dunno, probably not.
higher spring rates and shocks,
larger sway bars,
larger cross-drilled rotors,
engine oil, transmission, and power steering fluid coolers,
Goodyear EMT tires,
revised gear ratios for 6spd or performance axle ratio (3.15) with automatic.
So...beefier trans??? Dunno, probably not.
different goodyear emts than the base
depending on the year the oil cooler will be in the radiator (earlier Z51s), or a small external one in the front bumper
the rear brake calipers have a smaller piston for a more front oriented brake bias
Race Director
Joined: Feb 2011
Posts: 12,122
Likes: 418
From: Cold Hell, Minnesota...for now
St. Jude Donor '15 thru '26
i know you CAN NOT and MUST not refer to the Z51 as a model
we have Z51 police on this board who will be all over your a$$ and will cite you for things like that, so becareful... they take is SUPER serious too
i don't think you can snip them off with a radar detector either
we have Z51 police on this board who will be all over your a$$ and will cite you for things like that, so becareful... they take is SUPER serious too
i don't think you can snip them off with a radar detector either
Race Director
Joined: Mar 2010
Posts: 16,884
Likes: 5,342
From: T-Town WA
2016 C6 of Year Finalist
All gears in the "Z51" 6spd are shorter, except fourth which is direct in each trans.
Go to the museum website and search specs for your car.
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Melting Slicks
Joined: May 2010
Posts: 2,037
Likes: 331
From: Long Island New York
i think they may have made slight changes over the years??????
but i haven't heard of a trans update
i've heard rear gear ratio (but i think was another option at least on our 05 is was, 2:73 vs 3:15??)
i know this type of info has been posted before, may want to try a search
greaseable tie rod ends too, i think that was Z51 specific
i know you CAN NOT and MUST not refer to the Z51 as a model
we have Z51 police on this board who will be all over your a$$ and will cite you for things like that, so be careful... they take is SUPER serious too
i don't think you can snip them off with a radar detector either
but i haven't heard of a trans update
i've heard rear gear ratio (but i think was another option at least on our 05 is was, 2:73 vs 3:15??)
i know this type of info has been posted before, may want to try a search
greaseable tie rod ends too, i think that was Z51 specific
i know you CAN NOT and MUST not refer to the Z51 as a model
we have Z51 police on this board who will be all over your a$$ and will cite you for things like that, so be careful... they take is SUPER serious too
i don't think you can snip them off with a radar detector either
Race Director
Joined: May 2006
Posts: 12,973
Likes: 1,020
From: SOFLA
2016 Corvette of Year
2015 C6 of Year Finalist
i think they may have made slight changes over the years??????
but i haven't heard of a trans update
i've heard rear gear ratio (but i think was another option at least on our 05 is was, 2:73 vs 3:15??)
i know this type of info has been posted before, may want to try a search
greaseable tie rod ends too, i think that was Z51 specific
i know you CAN NOT and MUST not refer to the Z51 as a model
we have Z51 police on this board who will be all over your a$$ and will cite you for things like that, so becareful... they take is SUPER serious too
i don't think you can snip them off with a radar detector either
but i haven't heard of a trans update
i've heard rear gear ratio (but i think was another option at least on our 05 is was, 2:73 vs 3:15??)
i know this type of info has been posted before, may want to try a search
greaseable tie rod ends too, i think that was Z51 specific
i know you CAN NOT and MUST not refer to the Z51 as a model
we have Z51 police on this board who will be all over your a$$ and will cite you for things like that, so becareful... they take is SUPER serious too
i don't think you can snip them off with a radar detector either
I have a Z51 model and have been cited... wait I can't say that, but really, I have a widebody C6, wait I am not allowed to say that either, crap... I have a car.... can I say that? I changed so much on it, it's not even a Z51 model anymore... 
Mine is a 2006 A6 (Auto) and has 2:56 gears
Race Director
Joined: Aug 2010
Posts: 12,641
Likes: 464
From: Houston TX
Well, yes and no. 2.73 is the standard automatic rear end ratio with 4spd auto and 3.42 with the 6spd auto. 3.15 is optional with the 4spd auto and 2.56 is optional with the 6spd auto. The 6spd rear end ratio 3.42, also.
All gears in the "Z51" 6spd are shorter, except fourth which is direct in each trans.
Go to the museum website and search specs for your car.
All gears in the "Z51" 6spd are shorter, except fourth which is direct in each trans.
Go to the museum website and search specs for your car.
IIRC, the C6 A6 has the 2.56 rear end ratio standard, with the 2.73 rear end ratio option being part of
the Z51 package. All the C6 manual trannny's get the 3.42 rear end ratio.
(when I bought my '09 coupe w/Z51, that was the result of the research I did at the time)
Race Director
Joined: May 2006
Posts: 12,973
Likes: 1,020
From: SOFLA
2016 Corvette of Year
2015 C6 of Year Finalist
IIRC, the C6 A6 has the 2.56 rear end ratio standard, with the 2.73 rear end ratio option being part of
the Z51 package. All the C6 manual trannny's get the 3.42 rear end ratio.
(when I bought my '09 coupe w/Z51, that was the result of the research I did at the time)
the Z51 package. All the C6 manual trannny's get the 3.42 rear end ratio.
(when I bought my '09 coupe w/Z51, that was the result of the research I did at the time)
Race Director
Joined: Mar 2005
Posts: 10,399
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From: Austin Texas
Burning Brakes
Joined: Aug 2011
Posts: 967
Likes: 1
I have a Z51 model and have been cited... wait I can't say that, but really, I have a widebody C6, wait I am not allowed to say that either, crap... I have a car.... can I say that? I changed so much on it, it's not even a Z51 model anymore... Mine is a 2006 A6 (Auto) and has 2:56 gears
WOW
i'm surprised you weren't thrown into the Z51 Penetentory
i sense some attitude with you there mister and i bet the Z51 coppers don't like it either, just becareful....
never know what can happen if two or more show up at the same time, it AIN'T gonna be pretty for you...
believe me... my wife is in Z-51 violation big time... so... shhhhhhhh
be veeeeyyyyy quiet (in an elmur j fud voice)
but those panzi a$$ ***** phockers gotta go thru me first...
Race Director
Joined: May 2006
Posts: 12,973
Likes: 1,020
From: SOFLA
2016 Corvette of Year
2015 C6 of Year Finalist
I'll look at the window sticker when I get home and see if it says anything on it.
Race Director
Joined: May 2006
Posts: 12,973
Likes: 1,020
From: SOFLA
2016 Corvette of Year
2015 C6 of Year Finalist
WOW
i'm surprised you weren't thrown into the Z51 Penetentory
i sense some attitude with you there mister and i bet the Z51 coppers don't like it either, just becareful....
never know what can happen if two or more show up at the same time, it AIN'T gonna be pretty for you...
believe me... my wife is in Z-51 violation big time... so... shhhhhhhh
be veeeeyyyyy quiet (in an elmur j fud voice)
but those panzi a$$ ***** phockers gotta go thru me first...
i'm surprised you weren't thrown into the Z51 Penetentory
i sense some attitude with you there mister and i bet the Z51 coppers don't like it either, just becareful....
never know what can happen if two or more show up at the same time, it AIN'T gonna be pretty for you...
believe me... my wife is in Z-51 violation big time... so... shhhhhhhh
be veeeeyyyyy quiet (in an elmur j fud voice)
but those panzi a$$ ***** phockers gotta go thru me first...
Race Director
Joined: Mar 2010
Posts: 16,884
Likes: 5,342
From: T-Town WA
2016 C6 of Year Finalist
Correct...3:42 is the standard ratio and 2:56 is the optional ratio with A6.
